National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Novel Carbon Nanotube-Based Nanostructures for High-Temperature Gas Sensing, (Final).

DE2009947007

Publication Date	2008
Personal Author	Zhi, C.; Kozo, S.
Page Count	16
Abstract	The primary objective of this research is to examine the feasibility of using vertically aligned multi-wall carbon nanotubes (MWCNTs) as a high temperature sensor material for fossil energy systems where reducing atmospheres are present. In the initial period of research, we fabricated capacitive sensors for hydrogen sensing using vertically aligned MWCNTs. We found that CNT itself is not sensitive to hydrogen. Moreover, with the help of Pd electrodes, hydrogen sensors based on CNTs are very sensitive and fast responsive. However, the Pd-based sensors can not withstand high temperature (T<200 C). In the last year, we successfully fabricated a hydrogen sensor based on an ultra-thin nanoporous titanium oxide (TiO(sub 2)) film supported by an AAO substrate, which can operate at 500 C with hydrogen concentrations in a range from 50 to 500 ppm.
Keywords	Carbon Sensors Electrodes Nanostructures Energy systems Fabrication Multi-wall carbon nanotubes (MWCNTs) Hydrogen nanostructures High temperature sensor materials Titanium oxides Carbon Nanotube-Based Hydrogen Sensors CNT-based hydrogen sensors Pyrolytic carbon-stabilized nanoporous palladium hydrogen sensors Nanoporous TiO2 thin film hydrogen sensors Nanotubes
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Kentucky Univ., Lexington. Dept. of Mechanical Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200915
Contract Number	DE-FG26-04NT42171

Novel Carbon Nanotube-Based Nanostructures for High-Temperature Gas Sensing, (Final).

Novel Carbon Nanotube-Based Nanostructures for High-Temperature Gas Sensing, (Final).
DE2009947007

Publication Date	2008
Personal Author	Zhi, C.; Kozo, S.
Page Count	16
Abstract	The primary objective of this research is to examine the feasibility of using vertically aligned multi-wall carbon nanotubes (MWCNTs) as a high temperature sensor material for fossil energy systems where reducing atmospheres are present. In the initial period of research, we fabricated capacitive sensors for hydrogen sensing using vertically aligned MWCNTs. We found that CNT itself is not sensitive to hydrogen. Moreover, with the help of Pd electrodes, hydrogen sensors based on CNTs are very sensitive and fast responsive. However, the Pd-based sensors can not withstand high temperature (T<200 C). In the last year, we successfully fabricated a hydrogen sensor based on an ultra-thin nanoporous titanium oxide (TiO(sub 2)) film supported by an AAO substrate, which can operate at 500 C with hydrogen concentrations in a range from 50 to 500 ppm.
Keywords	Carbon Sensors Electrodes Nanostructures Energy systems Fabrication Multi-wall carbon nanotubes (MWCNTs) Hydrogen nanostructures High temperature sensor materials Titanium oxides Carbon Nanotube-Based Hydrogen Sensors CNT-based hydrogen sensors Pyrolytic carbon-stabilized nanoporous palladium hydrogen sensors Nanoporous TiO2 thin film hydrogen sensors Nanotubes
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Kentucky Univ., Lexington. Dept. of Mechanical Engineering.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200915
Contract Number	DE-FG26-04NT42171